Alternatively, real requirements on definitions would make little sense. This is to not deny that no new proposition-no less than in the sense of fact-situation-is expressed in the expanded language. An ostensive definition can bring about an important enrichment of a language. Allow us to say that a homogenous definition is regular iff its definiendum is an identical to the outlined time period. Call Girls in Ayakudi two definitions equivalent iff they yield the same theorems in the expanded language. Note that the 2 criteria govern all stipulative definitions, no matter whether or not they are single or a number of, or of whether or not they're of type (2) or not. The syntactic and semantic formulations of the 2 criteria are plainly parallel.